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    • 9. 发明专利
    • Method for obtaining aromatic hydroxy compound from waste optical disk
    • 从废弃光盘获得芳香羟基化合物的方法
    • JP2005239562A
    • 2005-09-08
    • JP2004047506
    • 2004-02-24
    • Teijin Chem Ltd帝人化成株式会社
    • TAKEMOTO HIDEMI
    • C08J11/08C07C37/52C07C39/16C08J11/16
    • Y02W30/701Y02W30/705
    • PROBLEM TO BE SOLVED: To provide a method for obtaining a high-purity aromatic dihydroxy compound by inexpensively treating a large amount of a waste optical disk (e.g. an aromatic polycarbonate product such as a CD, a CD-ROM or a DVD which became unnecessary) using the aromatic polycarbonate as a substrate.
      SOLUTION: The method for obtaining the aromatic hydroxy compound from the waste optical disk is characterized as follows. The waste optical disk is mixed with an organic solvent and the aromatic polycarbonate used in the waste optical disk is dissolved in the organic solvent. The resultant solution in the organic solvent is mixed with an aqueous solution of an alkali metal hydroxide under conditions without substantially decomposing the aromatic polycarbonate. The organic solvent phase is then separated from the aqueous solution phase and the aromatic polycarbonate in the resultant organic solvent phase is decomposed under alkaline conditions to afford the aromatic hydroxy compound.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 待解决的问题:提供通过廉价处理大量废弃光盘(例如,诸如CD,CD-ROM或DVD的芳族聚碳酸酯产品)来获得高纯度芳族二羟基化合物的方法 这是不必要的),使用芳族聚碳酸酯作为基材。 解决方案:从废弃光盘获得芳族羟基化合物的方法的特征如下。 废弃光盘与有机溶剂混合,废光盘中使用的芳族聚碳酸酯溶解在有机溶剂中。 将所得到的有机溶剂溶液与碱金属氢氧化物的水溶液在不使芳香族聚碳酸酯基本分解的条件下混合。 然后将有机溶剂相与水溶液相分离,所得有机溶剂相中的芳族聚碳酸酯在碱性条件下分解,得到芳族羟基化合物。 版权所有(C)2005,JPO&NCIPI